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Create a custom event in Java
...unding declaration in the body of a class method results in a compile-time error." -- JLS for Java 5, §8.4.3.2
– cHao
Aug 3 '14 at 5:23
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Changing the cursor in WPF sometimes works, sometimes doesn't
...ng the app cursor can have nasty side effects, for instance, a popping up (error) message box might be forced to use the same overridden cursor erroneously while the intention was only to override while the mouse is hovering over the actual and active control.
– Gábor
...
Detect all Firefox versions in JS
...
// Statement to handle exceptions
outputVersion.innerHTML = "An error occured. This could be because the default settings in Firefox have changed. Check about.config ";
}
<div id="displayFoxVersion"></div>
...
How do I validate a date string format in python?
...
datetime.datetime.strptime(date_text, '%Y-%m-%d')
except ValueError:
raise ValueError("Incorrect data format, should be YYYY-MM-DD")
>>> validate('2003-12-23')
>>> validate('2003-12-32')
Traceback (most recent call last):
File "<pyshell#20>", line 1,...
How can I maintain fragment state when added to the back stack?
... footprint), then there is high possibility you end up with the OutOfMemoryError since all of the fragments holds rootview reference and GC cant collect it. I think the better approach is to inflate the view all the time (and let Android system handle its view creation/destroying) and onActivityCrea...
How do I run a Python program in the Command Prompt in Windows 7?
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On Windows 10 cmd would still throw the same error after running this script ('python' is not recognized ...). After inspecting the PATH I noticed that the relevant lines had indeed been added, but only to the "user variables", not to "system variables". I copied them m...
What does middleware and app.use actually mean in Expressjs?
...and the server answer. The most common middleware functionality needed are error managing, database interaction, getting info from static files or other resources. To move on the middleware stack the next callback must be called, you can see it in the end of middleware function to move to the next s...
Just what is an IntPtr exactly?
...er type. This feature is important in .NET since using pointers is highly error prone and therefore illegal in most contexts. By allowing the pointer value to be stored in a "safe" data type, plumbing between unsafe code segments may be implemented in safer high-level code -- or even in a .NET lan...
Reference: What is variable scope, which variables are accessible from where and what are “undefined
... file accessible in another? Why do I sometimes get "undefined variable" errors?
3 Answers
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Aspect Oriented Programming vs. Object-Oriented Programming
...a distance".
Action at a distance is an
anti-pattern (a recognized common
error) in which behavior in one part
of a program varies wildly based on
difficult or impossible to identify
operations in another part of the
program.
As a newbie to a project, I might just read the code of any set-method a...